The things you need are very formulaic, and most competent real estate attorneys can do these very cheaply, in the hopes that if you ever have a "more expensive" need, that you'll contact them for that, too.Congrats on getting up and rolling, and best of luck!

With a formula and stringent due diligence these types of real estate purchases are very profitable.

I currently manually enter into excel with a spreadsheet I made (formulas etc...). 

Texas is a tough market, I looked at Dallas and Houston as options for my group but those markets are super competitive and the houses on the MLS do not work in the BRRRR formula and the houses held by wholesalers have too high of a wholesale fee. 

Your idea is a formula for disaster.

You basically go see the properties, use the formula:  ARV x 0.7 - improvement cost - assignment fee would be your offer.

The formula used above is a solid rule of thumb. 

Pay the bill yourself, then reimburse yourself by charging the tenants based on a formula.

Quote from @Nick Bednarczyk: Hi Nick, thanks for this formula.

The houses you find on the MLS do not work in the formula for flipping.